P0141 — 02 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)
Category: Powertrain Severity: Medium
Updated:
DTC code P0141 means: 02 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2). It falls under the "Powertrain" category, with an estimated severity of Medium. Common causes include faulty O2 sensor heater, blown fuse and wiring/connector issue; it's worth confirming the diagnosis before replacing parts.
Possible causes
- Faulty O2 sensor heater
- Blown fuse
- Wiring/connector issue
- Faulty ECM
Symptoms
- Loss of power when accelerating
- Unstable idle
- Higher fuel consumption
- Jerking while driving
How to diagnose it step by step
- Check the fuse.
- Measure the downstream sensor heater.
- Check the wiring under the car.
- Replace the sensor.
How to fix it
Clean or replace the MAF/MAP sensor and check for intake leaks.
Estimated repair cost
$100–280.
Frequently asked questions
What does DTC code P0141 mean?
02 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2).
Is code P0141 serious?
Severity Medium. Not urgent, but worth diagnosing to avoid bigger damage.
Can I keep driving with code P0141?
Yes, it is safe to drive.
Related codes
P0140 P0139 P0138 P0137 P0136 P0135 P0134 P0133 P0132 P0150
Refine by car make
- Audi P0141: Mass air flow (MAF) sensor or leak.
- BMW P0141: O2 sensor (bank 1, sensor 2).
- Citroën P0141: MAF/MAP sensor or leak.
- Dacia P0141: MAF/MAP sensor.
- Fiat P0141: MAF/MAP sensor.
- Ford P0141: Heater fuse or downstream O2 sensor.
- Honda P0141: MAF/MAP sensor.
- Hyundai P0141: MAF sensor.
- Kia P0141: MAF sensor.
- Mazda P0141: MAF sensor.
- Mercedes-Benz P0141: MAF sensor or intake leak.
- Nissan P0141: MAF sensor.
- Opel P0141: MAF sensor or leak.
- Peugeot P0141: MAF/MAP sensor or leak.
- Renault P0141: MAF/MAP sensor or leak.
- Toyota P0141: Downstream O2 sensor.
- Volkswagen P0141: Downstream O2 sensor or its fuse.
- Volvo P0141: MAF sensor.
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